Title :
Ultrafast transport in dye sensitized ZnO nanotips investigated by terahertz spectroscopy
Author :
Nemec, Hynek ; Rochford, Jonathan ; Taratula, Olena ; Chen, Hanhong ; Zhang, Zheng ; Lu, Yicheng ; Galoppini, Elena ; Sundstrom, Villy
Author_Institution :
Dept. of Chem. Phys., Lund Univ., Lund
Abstract :
Transient far-infrared conductivity of as-grown and dye-sensitized ZnO nanotips is measured using time-resolved terahertz spectroscopy. We reveal that the sensitization procedure dramatically affects the transport properties of ZnO nanotips.
Keywords :
II-VI semiconductors; dyes; high-speed optical techniques; nanostructured materials; photoconductivity; submillimetre wave spectra; time resolved spectra; wide band gap semiconductors; zinc compounds; ZnO; dye; nanotips; photoconductivity; sensitization; time-resolved terahertz spectroscopy; transient far-infrared conductivity; transport properties; Conductivity; Nonlinear optics; Optical pumping; Optical sensors; Pulse amplifiers; Semiconductor optical amplifiers; Spectroscopy; Stimulated emission; Ultrafast optics; Zinc oxide; (260.7120) Ultrafast phenomena; (300.6495) Spectroscopy, terahertz; (300.6500) Spectroscopy, time-resolved; (300.6530) Spectroscopy, ultrafast;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
